DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P163081

DTC Code DTC Name
P163081 Communication Error from VSC to ECM Invalid Serial Data Received

DESCRIPTION

The skid control ECU (brake booster with master cylinder assembly) sends signals such as cruise control cancel signals and brake demand response signals to the hybrid vehicle control ECU when the dynamic radar cruise control system is operating.

DTC No. Detection Item DTC Detection Condition Trouble Area
P163081 Communication Error from VSC to ECM Invalid Serial Data Received

    w/o Full-speed range following function:

  • While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, communication data from the skid control ECU (brake booster with master cylinder assembly) is logically inconsistent for approximately 0.5 seconds or more.


    w/ Full-speed range following function:

  • While the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, communication data from the skid control ECU (brake booster with master cylinder assembly) is logically inconsistent for approximately 0.5 seconds or more.

  • CAN communication system

  • Skid control ECU (brake booster with master cylinder assembly)

  • Hybrid vehicle control ECU

CAUTION / NOTICE / HINT

Note


  • Before replacing the hybrid vehicle control ECU, refer to Service Bulletin.

  • First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.

    Click here

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Using the GTS, check if the CAN communication system is functioning normally.

      Click here

      Result
      Result Proceed to
      CAN communication system DTCs are not output OK
      CAN communication system DTCs are output NG

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. CHECK FOR DTCs (RADAR CRUISE 1)


    1. Clear the DTCs.

      Click here


      Powertrain > Cruise Control > Clear DTCs

    2. Perform the following to make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the malfunction cannot be detected.


      1. Turn the power switch on (IG).

      2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON/OFF button).

      3. w/ Full-speed range following function: Drive the vehicle at 5 km/h (3 mph) or more for 0.5 seconds or more.

        w/o Full-speed range following function: Drive the vehicle at 36 km/h (22 mph) or more for 0.5 seconds or more.

    3. Check for DTCs.

      Click here


      Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTC P163081 is not output A
      DTC P163081 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  3. REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU)


    1. Replace the brake booster with master cylinder assembly (skid control ECU).

      for LHD: Click here

      for RHD: Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK FOR DTCs (RADAR CRUISE 1)


    1. Clear the DTCs.

      Click here


      Powertrain > Cruise Control > Clear DTCs

    2. Perform the following to make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the malfunction cannot be detected.


      1. Turn the power switch on (IG).

      2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON/OFF button).

      3. w/ Full-speed range following function: Drive the vehicle at 5 km/h (3 mph) or more for 0.5 seconds or more.

        w/o Full-speed range following function: Drive the vehicle at 36 km/h (22 mph) or more for 0.5 seconds or more.

    3. Check for DTCs.

      Click here


      Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTC P163081 is not output A
      DTC P163081 is output B

    A

    END

    B

    REPLACE HYBRID VEHICLE CONTROL ECU Click here